Journal of Materials Science

, Volume 26, Issue 4, pp 1109–1112 | Cite as

Temperature and structure effects on the electrical conductivity properties of some azo compounds and their copper(II) complexes

  • M. S. Masoud
  • S. S. Haggag
  • E. M. Soliman
  • M. E. El-Shabasy


The electrical conductivity of some 5-(m-substituted phenylazo) barbituric acid derivatives as well as their copper(II) complexes has been measured in the temperature range 297 to 443 K. The results revealed semiconducting properties for these systems. The conductivity curves in most cases gave two different activation energies. Both the structure of the ligand and the temperature played an effective role in the conduction process. Empirical equations correlating the activation energy to the conductivity are given. The mobility was calculated and a hopping model is proposed to explain the conduction process.


Polymer Copper Activation Energy Electrical Conductivity Acid Derivative 
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  1. 1.
    M. S. Masoud, E. M. Soliman, A. E. El-Kholy andE. A. Khalil,Thermochim. Acta 136 (1988) 1.CrossRefGoogle Scholar
  2. 2.
    M. S. Masoud, A. El-Dessouky andE. E. Ghatwary,Inorg, Chim. Acta 141 (1988) 119.CrossRefGoogle Scholar
  3. 3.
    M. S. Masoud, A. M. Heiba andF. M. Ashmawy,Trans. Met. Chem. 8 (1983) 124.CrossRefGoogle Scholar
  4. 4.
    M. S. Masoud, S. A. Abou Ali, G. Y. Ali andM. Eldessouky,J. Chem. Engng Data 28 (1983) 297.CrossRefGoogle Scholar
  5. 5.
    M. S. Masoud, T. M. Salem andM. Elhenawi,Synth. React. Inorg. Met.-Org. Chem. 11 (1981) 577.CrossRefGoogle Scholar
  6. 6.
    M. S. Masoud, M. M. Osman, T. M. Salem andE. A. Khalil,Ind. J. Chem. 20A (1981) 584.Google Scholar
  7. 7.
    M. S. Masoud, E. M. Soliman andM. E. Elshabasy,Thermochim. Acta 125 (1988) 9.CrossRefGoogle Scholar
  8. 8.
    M. S. Masoud, A. El Khatib, M. Kassem andA. R. Youssef,J. Mater. Sci. Lett. 7 (1988) 1291.CrossRefGoogle Scholar
  9. 9.
    M. S. Masoud, E. A. Khalil andM. E. Kassem,React. Solids 2 (1986) 269.CrossRefGoogle Scholar
  10. 10.
    A. I. Vogel, “Practical Organic Chemistry”, 3rd Edn (Longmans, Green, London, 1959).Google Scholar
  11. 11.
    C. G. B. Garrett, “Organic Semiconductors”, in “Semiconductors” edited by N. H. Hannay (Reinhold, New York, 1959) p. 120.Google Scholar
  12. 12.
    S. Aftergut andG. P. Brown, “Organic Semiconductors” (Macmillan, New York, 1962) p. 87.Google Scholar
  13. 13.
    H. A. Pohl andD. A. Opp,J. Phys. Chem. 66 (1962) 2121.CrossRefGoogle Scholar
  14. 14.
    F. Gutmann andA. Netschey,J. Chem. Phys. 36 (1962) 2355.CrossRefGoogle Scholar
  15. 15.
    F. Gutmann andH. Keyzer,Nature 205 (1965) 1102.CrossRefGoogle Scholar
  16. 16.
    Y. Nakamma, M. Naoi andM. Shimoji,Can. J. Chem. 55 (1977) 1975.CrossRefGoogle Scholar
  17. 17.
    M. S. Masoud, B. S. Farag, Y. Sawan, T. M. Salem, andM. M. El-Essawy,J. Non-Cryst. Solids 55 (1983) 209.CrossRefGoogle Scholar
  18. 18.
    J. M. Thomas,Chem. Br. 13 (1977) 175.Google Scholar
  19. 19.
    P. W. M. Jacobs,J. Sci. Instrum. 30 (1953) 204.CrossRefGoogle Scholar
  20. 20.
    S. H. Glarum,Phys. Chem. Solids 24 (1963) 1577.CrossRefGoogle Scholar

Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • M. S. Masoud
    • 1
  • S. S. Haggag
    • 1
  • E. M. Soliman
    • 2
  • M. E. El-Shabasy
    • 2
    • 3
  1. 1.Chemistry Department, Faculty of ScienceAlexandria UniversityAlexandriaEgypt
  2. 2.Chemistry Department, Faculty of ScienceMinia UniversityMiniaEgypt
  3. 3.Physics Department, Faculty of ScienceMinia UniversityMiniaEgypt

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